Compilare: user.cpp: In function ‘int main()’: user.cpp:90:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<Paths[i].size();++j) ^ user.cpp:76:17: warning: unused variable ‘aux’ [-Wunused-variable] int i,x,y,Q,aux,tip,j,n,sol; ^ user.cpp:77:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("disconnect.in","r",stdin); ^ user.cpp:78:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("disconnect.out","w",stdout); ^ user.cpp:79:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n,&Q); ^ user.cpp:82:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x,&y); ^ user.cpp:100:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &tip,&x,&y); ^